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dawn/dawn/f6d2f3e193a01333ff8fe313a1573eef2a9cbc4a
commit
f6d2f3e193a01333ff8fe313a1573eef2a9cbc4a
[log]
author
Kyle Charbonneau <kylechar@google.com>
Wed Feb 04 08:02:32 2026 -0800
committer
Dawn LUCI CQ <dawn-scoped@luci-project-accounts.iam.gserviceaccount.com>
Wed Feb 04 08:02:32 2026 -0800
tree
e5a70537a76de9d23802ec73073867c573bfbc2d
parent
ed67f0044857708debecbaf632b6498bfef728ac [diff]
Metal: Clear mappable buffers with memset

Don't issue GPU commands to clear the buffer in MapAsyc() as that
requires locking the device mutex. Once the mapped pointer is available
it can be cleared with memset() instead.

Bug: 425472913
Change-Id: I09e19d435e85e50529f7c86c55b5fda0854f1d35
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/286875
Reviewed-by: Kai Ninomiya <kainino@chromium.org>
Commit-Queue: Kyle Charbonneau <kylechar@google.com>
Reviewed-by: Corentin Wallez <cwallez@chromium.org>
2 files changed
tree: e5a70537a76de9d23802ec73073867c573bfbc2d
  1. .github/
  2. .vscode/
  3. build_overrides/
  4. docs/
  5. generator/
  6. include/
  7. infra/
  8. scripts/
  9. src/
  10. test/
  11. third_party/
  12. tools/
  13. webgpu-cts/
  14. build
  15. buildtools
  16. testing
  17. .bazelrc
  18. .clang-format
  19. .clang-format-ignore
  20. .clang-tidy
  21. .git-blame-ignore-revs
  22. .gitattributes
  23. .gitignore
  24. .gitmodules
  25. .gn
  26. .style.yapf
  27. .vpython3
  28. AUTHORS
  29. BUILD.bazel
  30. BUILD.gn
  31. CMakeLists.txt
  32. CMakeSettings.json
  33. CODE_OF_CONDUCT.md
  34. codereview.settings
  35. CONTRIBUTING.md
  36. CPPLINT.cfg
  37. DEPS
  38. DIR_METADATA
  39. go.mod
  40. go.sum
  41. go_presubmit_support.py
  42. LICENSE
  43. OWNERS
  44. PRESUBMIT.py
  45. README.chromium
  46. README.md
  47. test_spec_presubmit_support.py
  48. unsafe_buffers_paths.txt
  49. WATCHLISTS
  50. WORKSPACE.bazel
README.md

Build Status Matrix Space

Dawn, a WebGPU implementation

Dawn is an open-source and cross-platform implementation of the WebGPU standard. More precisely it implements webgpu.h that is a one-to-one mapping with the WebGPU IDL. Dawn is meant to be integrated as part of a larger system and is the underlying implementation of WebGPU in Chromium.

Dawn provides several WebGPU building blocks:

  • WebGPU C/C++ headers that applications and other building blocks use.
    • The webgpu.h version that Dawn implements.
    • A C++ wrapper for the webgpu.h.
  • A “native” implementation of WebGPU using platforms' GPU APIs: D3D12, Metal, Vulkan and OpenGL. See per API support for more details.
  • A client-server implementation of WebGPU for applications that are in a sandbox without access to native drivers
  • Tint is a compiler for the WebGPU Shader Language (WGSL) that can be used in standalone to convert shaders from and to WGSL.

Helpful links:

Documentation table of content

Developer documentation:

User documentation: (TODO, figure out what overlaps with the webgpu.h docs)

License

BSD 3-Clause License, please see LICENSE.

Disclaimer

This is not an officially supported Google product.